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Old March 26th, 2019, 02:08 PM   #1
DanilloZ28
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Name: Dan
Location: USA
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Motorcycle(s): 99 250

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Carbs cleaned - Diaphragm ripped - Options?

Hi everyone,

I have 1999 Ninja 250 - Love the bike. The bike sat for ~8 months and the carbs were not drained. This resulted in the small jet being clogged. A full carb cleaning was performed. When removing one of the black caps on the carbs, the diaphragm had a small piece just lying there. I did my best to take it off carefully - no idea how it ripped but it did.

To not ruin the day I took some super glue type adhesive and patched it. It actually worked and the bike rode the best it ever had in the 5 years I have owned it. Cold starts with no choke and purrs like a kitten.

I am thinking the super glue will fail - especially when gas hits it. Havent started it since a week ago fixing it. Regardless I want to replace the diaphragm, I do not want to risk being stranded over $50-$100.

Options:

$79 full drop in: https://www.ebay.com/itm/332514969884

$33 Latex top: https://www.ebay.com/itm/332293461175

Is it possible/worth it to replace just the top piece? People are buying it but I cannot find any videos/documentation for the Ninja 250 to replace just that piece. Any other suggestions?
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Old March 26th, 2019, 02:50 PM   #2
Z1R rider
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Name: Roger
Location: Mitchell, South Dakota
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Motorcycle(s): 1978 Z1R, 1999 EX250

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Here's a thread on that very subject, his is a new gen but I'd think they are the same or similar.

https://www.ninjette.org/forums/showthread.php?t=331389

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Old March 27th, 2019, 08:08 AM   #3
ducatiman
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Name: Gordon
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Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R

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If you decide to go with the $33 replacement diaphragm, I'd be very interested in your success and comments, please post if you go that route.
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